Improvement in attaching knobs to their spindles



E. M. MIX & J. E. MIX.

improvement in At taching KhObS to their Spindles;

No 127 089 v Patented May 21,1872.

. ,m P/mrowmomu'M/c m. an asaa/mrs macsssj UNITED STATES PATENT OFFICE.

EUGENE M. MIX AND JAMES E. MIX, OF WESTFIELD, NEW YORK.

IMPROVEMENT IN ATTACHING KNOBS TO THEIR SPINDLES.

Specification forming part of Letters Patent N 0. 127,089, dated May 21, 1872.

SPECIFICATION with in position, the key falls into it and se- To all whom it may concern: cures it and the knob-shank firmly together. Be it known that we, EUGENEM. and JAMES The opposite series of notches on the angles E. MIX, of Westfield, in the county of Ohauof the spindle alternate with each other in potauqua and State of New York, have inventsition, to admit of more accurate adjustment ed a new and useful Improvement in Attachto the thickness of the door, so that very thin ing Knobs to Spindles, of which the following washers only are required. The outer side of is a description: the key 0 is of segmental form, corresponding Our invention relates especially to fasten With that of the shank, so as to present an ing the knobs to spindles of door-looks; and even surface when closed. The slot cl is reconsists of a key or latch hinged in a transcessed at h for the purpose of allowing the free verse slot of the knob-shank, which, when end of the key to be raised by inserting any closed, enters one of a series of slots or notches Suitable instrument. The ends of the knobformed in the spindle when the latter is inshanks abut against a bearing-plate, g, which serted in its socket; also, in combination with is attached to the door in the'usual manner, said pivoted key, of an introverted socket and concealed by the rose K. This rose is formed in the rose to conceal the key and preformed with an introverted neck or socket, m, in-

vent it from disengaging the spindle. to which the knob-shank protrudes far enough In the drawing, Figure 1 is an elevation, to cover the hinged key 0, and prevent its risshowing two knobs attached to a spindle by ing and disengaging the shank, and also conthis device, the rose and bearing-plate being ceal it fiom view. shown in section on one side of the door, and -Our device presents the advantages over one knob partially withdrawn from the spinother fastenin gs of security and stability, as it dle, showing the series of notches with which cannot wear loose and fall out from use, like the pivoted key engages; Fig. 2, a sectional the screw-fastening; obviates vibration and view of the shank and spindle in plane of line shakiness of the parts; admits of close adjustm as, Fig. 1, showing the hinged key raised; ment to adapt the knobs to the thickness of Fig. 3, a similar view, showing the key closed. the doors; is inexpensive, and admits of bet- The spindle A is of the ordinary square ter finish and more elegance of the shank in form of lock-spindles, its ends entering square consequence of being concealed from sight. sockets in the knob-shanks B B. At a point What we claim as our invention isnear the ends of each a transverse slot, d, is 1. The key orlatch c, hingedinthe transverse made to a depth sufficient to open into the slot d of the knob-shank, in combination with socket, and this slot is in direction oblique to the notched spindle A, operating substantialthe square of the socket, so that the angle ly as set forth. thereof projects into the slot, as seen in Figs. 2. In combination with the hinged key or 2 and 3. In this slot the key or latch c is pivlatch, pivoted in the shank B, the introverted oted at one end by means of the pin 6, or by neck or socket m of the rose K, substantially any other suitable mode, to admit of the free as and for the purpose set forth.

end rising and falling, as shown. The spin- In witness whereof I have hereunto signed die A is provided at both ends with series of my name in the presence of two subscribing notches, f, on two opposite angles, of suitable witnesses.

size to receive the part of the hinged key EUGENE M. MIX. which projects into the recess of the socket, JAMES E. MIX. so that, the spindle being inserted with one of Witnesses:

its notched angles contiguous to the key and- RICHARD BENNETT,

moved until one of the notches coincides there- CHARLES. W. HALE. 

